One of the most important factors in survival of an organization in today's competitive environment is to reduce production costs. Choosing the right suppliers can help us reduce these costs. The selection and assessment of suppliers is a multi-criteria decision-making process, in which quantitative and qualitative criteria are presented in this assessment, our goal in this article is to first compile all the criteria that organizations are conducting in evaluating and The best choice is to help, and in the future, an algorithm that determines the number of clusters of suppliers and then supplies the suppliers in their clusters, in the end is a case study in which to evaluate and select the supply The Setareh flour milling company will review the payment.